[Insight-users] Medial Axis Transform (MAT) or a skeleton in 3D image
or surface mesh
anast.jm at pg.com
anast.jm at pg.com
Tue, 13 Apr 2004 14:52:36 -0400
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Posted for Tim....john
----- Forwarded by John Anast-JM/PGI on 04/13/2004 02:51 PM -----
Tim Hutton <T.Hutton at eastman.ucl.ac.uk>
04/13/2004 01:44 PM
To: John Anast-JM/PGI at PGI, insight-users at itk.org
cc:
Subject: Re: [Insight-users] Medial Axis Transform (MAT) or a skeleton in 3D image
or surface mesh
John,
(this mail might get bounced from the ITK list since I'm not a subscriber
so please repost if necessary)
Yes, vtkPowerCrustSurfaceReconstruction can give you the 3D skeleton of a
polygonal mesh. It works very well I find. Simply use the
GetMedialSurface() function after Update()'ing the filter to get the
medial
surface.
(Personally I find skeletons a poor way to represent objects since they
are
sensitive to small changes on the surface but this is off topic...)
The licence for the powercrust code is GPL - no problem unless you are
using the code in a commercial application. But I'm no expert on GPL.
Tim
At 13:36 13/04/2004 -0400, anast.jm at pg.com wrote:
>Luis/Inaxio
>
>Tim Hutton had ported the PowerCrust Reconstruction filter into vtk
>(http://www.eastman.ucl.ac.uk/~thutton/powercrust) from the origianl code
>by <http://www.cs.utexas.edu/users/amenta>Nina Amenta,
><http://www.cs.utexas.edu/users/sunghee>Sunghee Choi and
><http://www.cs.utexas.edu/users/rkolluri>Ravi Krishna Kolluri
>(http://www.cs.utexas.edu/users/amenta/powercrust/welcome.html). If I've
>gotten the story wrong, sorry Tim....
>
>This approach uses the Medial Axis Transform but I know nothing about it
>(other than it works pretty well in a number of surfacing cases I tried).
>Maybe there is some code that could be reused there. I don't know what
the
>status of the licensing is so need to be a bit careful how you use it.
>Perhaps Tim could be of assistance?
>
>....john
>
>
>
>Luis Ibanez <luis.ibanez at kitware.com>
>Sent by: insight-users-admin at itk.org
>
>04/09/2004 05:20 PM
>
> To: Inaxio Aguirre <I.Aguirre at exeter.ac.uk>
> cc: insight-users at itk.org, (bcc: John Anast-JM/PGI)
> Subject: Re: [Insight-users] Medial Axis Transform (MAT)
> or a skeleton in 3D image or surface mesh
>
>
>
>Hi Inaxio,
>
>Nope, nothing yet...
>
>Any volunteers ?
>
>For anyone giving a course in Image Processing,
>that will make for a nice course project... :-)
>
>
> Luis
>
>-----------------------
>Inaxio Aguirre wrote:
>
> > Hello,
> >
> > Referring to a previous mail
> > (http://www.itk.org/pipermail/insight-users/2003-March/002885.html) sent on
> > March last year I want to know if there is already something available
in
> > itk to compute the Medial Axis Transform (MAT) or a skeleton from a 3D
> image
> > or a corresponding polygonal surface mesh.
> >
> > Thanks,
> > Inaxio
>
>_______________________________________________
>Insight-users mailing list
>Insight-users at itk.org
>http://www.itk.org/mailman/listinfo/insight-users
>
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<br><font size=2 face="sans-serif">Posted for Tim....john</font>
<br>
<br><font size=1 color=#800080 face="sans-serif">----- Forwarded by John Anast-JM/PGI on 04/13/2004 02:51 PM -----</font>
<br>
<table width=100%>
<tr valign=top>
<td>
<td><font size=1 face="sans-serif"><b>Tim Hutton <T.Hutton at eastman.ucl.ac.uk></b></font>
<p><font size=1 face="sans-serif">04/13/2004 01:44 PM</font>
<br>
<td><font size=1 face="Arial"> </font>
<br><font size=1 face="sans-serif"> To: John Anast-JM/PGI at PGI, insight-users at itk.org</font>
<br><font size=1 face="sans-serif"> cc: </font>
<br><font size=1 face="sans-serif"> Subject: Re: [Insight-users] Medial Axis Transform (MAT) or a skeleton in 3D image or surface mesh</font></table>
<br>
<br>
<br><font size=2 face="Courier New">John,<br>
<br>
(this mail might get bounced from the ITK list since I'm not a subscriber <br>
so please repost if necessary)<br>
<br>
Yes, vtkPowerCrustSurfaceReconstruction can give you the 3D skeleton of a <br>
polygonal mesh. It works very well I find. Simply use the <br>
GetMedialSurface() function after Update()'ing the filter to get the medial <br>
surface.<br>
<br>
(Personally I find skeletons a poor way to represent objects since they are <br>
sensitive to small changes on the surface but this is off topic...)<br>
<br>
The licence for the powercrust code is GPL - no problem unless you are <br>
using the code in a commercial application. But I'm no expert on GPL.<br>
<br>
Tim<br>
<br>
At 13:36 13/04/2004 -0400, anast.jm at pg.com wrote:<br>
<br>
>Luis/Inaxio<br>
><br>
>Tim Hutton had ported the PowerCrust Reconstruction filter into vtk <br>
>(http://www.eastman.ucl.ac.uk/~thutton/powercrust) from the origianl code <br>
>by <http://www.cs.utexas.edu/users/amenta>Nina Amenta, <br>
><http://www.cs.utexas.edu/users/sunghee>Sunghee Choi and <br>
><http://www.cs.utexas.edu/users/rkolluri>Ravi Krishna Kolluri <br>
>(http://www.cs.utexas.edu/users/amenta/powercrust/welcome.html). If I've <br>
>gotten the story wrong, sorry Tim....<br>
><br>
>This approach uses the Medial Axis Transform but I know nothing about it <br>
>(other than it works pretty well in a number of surfacing cases I tried). <br>
>Maybe there is some code that could be reused there. I don't know what the <br>
>status of the licensing is so need to be a bit careful how you use it. </font>
<br><font size=2 face="Courier New">>Perhaps Tim could be of assistance?<br>
><br>
>....john<br>
><br>
><br>
><br>
>Luis Ibanez <luis.ibanez at kitware.com><br>
>Sent by: insight-users-admin at itk.org<br>
><br>
>04/09/2004 05:20 PM<br>
><br>
> To: Inaxio Aguirre <I.Aguirre at exeter.ac.uk><br>
> cc: insight-users at itk.org, (bcc: John Anast-JM/PGI)<br>
> Subject: Re: [Insight-users] Medial Axis Transform (MAT) <br>
> or a skeleton in 3D image or surface mesh<br>
><br>
><br>
><br>
>Hi Inaxio,<br>
><br>
>Nope, nothing yet...<br>
><br>
>Any volunteers ?<br>
><br>
>For anyone giving a course in Image Processing,<br>
>that will make for a nice course project... :-)<br>
><br>
><br>
> Luis<br>
><br>
>-----------------------<br>
>Inaxio Aguirre wrote:<br>
><br>
> > Hello,<br>
> ><br>
> > Referring to a previous mail<br>
> > (http://www.itk.org/pipermail/insight-users/2003-March/002885.html) sent on<br>
> > March last year I want to know if there is already something available in<br>
> > itk to compute the Medial Axis Transform (MAT) or a skeleton from a 3D <br>
> image<br>
> > or a corresponding polygonal surface mesh.<br>
> ><br>
> > Thanks,<br>
> > Inaxio<br>
><br>
>_______________________________________________<br>
>Insight-users mailing list<br>
>Insight-users at itk.org<br>
>http://www.itk.org/mailman/listinfo/insight-users<br>
><br>
<br>
<br>
</font>
<br>
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